Subtract 98/70 from 20/15
1st number: 1 5/15, 2nd number: 1 28/70
20/15 - 98/70 is -1/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
20/15 = 20 × 14/15 × 14 = 280/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
98/70 = 98 × 3/70 × 3 = 294/210 - Subtract the two like fractions:
280/210 - 294/210 = 280 - 294/210 = -14/210 - After reducing the fraction, the answer is -1/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15-98/70 20/30-98/70 60/15-98/70 20/45-98/70 20/75-98/70